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Digital Thermometer and Thermostat

±2.0°C Accurate Digital Temperature Sensor Operates From a Supply of Only 1.7V to 3.7V

Product Details

Key Features

Applications/Uses

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 2-Wire/I2C/SMBus
Accuracy (±°C) 2
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +125
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.05
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Simplified Block Diagram

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Parameters

Parametric specs for Temperature Sensors
Sensor Type Local
# Channels One
Interface 2-Wire/I2C/SMBus
Accuracy (±°C) 2
Parasite Pwr. No
Temp. Thresh. Programmable
Temp. Resolution (bits) 9
10
11
12
Oper. Temp. (°C) -55 to +125
Package/Pins SOIC (N)/8
UMAX/8
Budgetary
Price (See Notes)
1.05

Key Features

  • Extend Performance Range with Low-Voltage, 1.7V to 3.7V Operating Range
  • Maximize System Accuracy in Broad Range of Thermal Management Applications
    • Measures Temperature from -55°C to +125°C (-67°F to +257°F)
    • ±2°C Accuracy over a -25°C to 100°C Range
    • User-Configurable Resolution from 9 Bits (Default) to 12 Bits (0.5°C to 0.0625°C)
  • Easy Upgrade to LM75: Pin and Software Compatible
  • Simplify Distributed Temperature-Sensing Applications with Multidrop Capability
    • Up to Eight DS75LVs Can Operate on 2-Wire Bus
  • Increase Reliability and System Robustness
    • Internally Filtered Data Lines for Noise Immunity (50ns Deglitch)
    • Bus Timeout Feature Prevents Lockup on 2-Wire Interface
  • Minimize Power Consumption with Built-In Shutdown Mode
  • Flexible User-Defined Thermostatic Modes with Programmable Fault Tolerance

Applications/Uses

  • Any Thermally Sensitive System
  • Cellular Base Stations
  • Office Equipment
  • Personal Computers

Description

The DS75LV low-voltage (1.7V to 3.7V) digital thermometer and thermostat provides 9-, 10-, 11-, or 12-bit digital temperature readings over a -55°C to +125°C range with ±2°C accuracy over a -25°C to +100°C range. At power-up, the DS75LV defaults to 9-bit resolution for software compatibility with the LM75. Communication with the DS75LV is achieved through a simple 2-wire serial interface.

The DS75LV thermostat has a dedicated open-drain output (O.S.) and programmable fault tolerance, which allows the user to define the number of consecutive error conditions that must occur before O.S is activated. There are two thermostatic operating modes that control thermostat operation based on user-defined trip-points (TOS and THYST).

Simplified Block Diagram

DS75LV: Functional Block Diagram DS75LV: Functional Block Diagram Zoom icon

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .